Exhibit 3.321

PAGE 1

     I, JEFFREY W. BULLOCK, SECRETARY OF STATE OF THE STATE OF DELAWARE, DO HEREBY CERTIFY THE ATTACHED ARE TRUE AND CORRECT COPIES OF ALL DOCUMENTS ON FILE OF “R. KENDALL BROWN PRACTICE, LLC” AS RECEIVED AND FILED IN THIS OFFICE.

     THE FOLLOWING DOCUMENTS HAVE BEEN CERTIFIED:

     CERTIFICATE OF FORMATION, FILED THE NINETEENTH DAY OF NOVEMBER, A.D. 1998, AT 9 O’CLOCK A.M.

     CERTIFICATE OF AMENDMENT, FILED THE TWENTY-SECOND DAY OF JANUARY, A.D. 2002, AT 10 O’CLOCK A.M.

     AND I DO HEREBY FURTHER CERTIFY THAT THE AFORESAID CERTIFICATES ARE THE ONLY CERTIFICATES ON RECORD OF THE AFORESAID LIMITED LIABILITY COMPANY, “R. KENDALL BROWN PRACTICE, LLC”.

2969144 8100H 110292856		/s/ Jeffrey W. Bullock Jeffrey W. Bullock, Secretary of State AUTHENTICATION: 8620259 DATE: 03-14-11
You may verify this certificate online at corp.delaware.gov/authver.shtml

STATE OF DELAWARE
SECRETARY OF STATE
DIVISION OF CORPORATIONS
FILED 09:00 AM 11/19/1998
981447615 – 2969144

CERTIFICATE OF FORMATION
OF
R. KENDALL BROWN PRACTICE, LLC

Under Section 18-201 of the
Delaware Limited Liability Company Act

     FIRST: The name of the limited liability company is R. Kendall Brown Practice, LLC (the “Company”).

     SECOND: The address of the registered office of the Company in the State of Delaware is 1013 Centre Road, Wilmington, Delaware 19805.

     THIRD: The name and address of the Company’s registered agent for service of process is Corporation Service Company, 1013 Centre Road, Wilmington, Delaware 19805.

     IN WITNESS WHEREOF, the undersigned has executed this Certificate of Formation as of November 19, 1998.

By:	/s/ John M. Franck II
	Name:	John M. Franck II
	Title:	Authorized Person

STATE OF DELAWARE
SECRETARY OF STATE
DIVISION OF CORPORATIONS
FILED 10:00 AM 01/22/2002
020040690 – 2969144

CERTIFICATE OF AMENDMENT

OF

R. Kendall Brown Practice, LLC

     1. The name of the limited liability company is R. Kendall Brown Practice, LLC

     2. The Certificate of Formation of the limited liability company is hereby amended as follows:

     The name and address of the registered agent is The Corporation Trust Company, Corporation Trust Center, 1209 Orange Street, Wilmington, Delaware 19801.

     IN WITNESS WHEREOF, the undersigned has executed this Certificate of Amendment of R. Kendall Brown Practice, LLC this 15 day of January, 2002.

R. Kendall Brown Practice, LLC

/s/ William F. Carpenter III William F. Carpenter III,

             Manager

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